//
//  BaseTableViewController.m
//  MJApp
//
//  Created by wangliang on 15/6/27.
//  Copyright (c) 2015年 wangliang. All rights reserved.
//

#import "BaseTableViewController.h"

@interface BaseTableViewController ()

@end

@implementation BaseTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    
    if (self.navigationController.childViewControllers.count>1) {
        self.leftBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 38, 20)];
        [self.leftBtn addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
        [self.leftBtn setImage:[UIImage imageNamed:@"backme"] forState:UIControlStateNormal];
        self.leftBtn.titleLabel.adjustsFontSizeToFitWidth = YES;
        self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:self.leftBtn];
    } else{
        self.leftBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 30, 18)];
        [self.leftBtn addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
        //        [self.leftBtn setImage:[UIImage imageNamed:@"backme"] forState:UIControlStateNormal];
        self.leftBtn.titleLabel.adjustsFontSizeToFitWidth = YES;
        self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:self.leftBtn];
        //        self.navigationItem.leftBarButtonItem.target = self;
        //        self.navigationItem.leftBarButtonItem.action = @selector(back);
    }
    self.rightBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 40, 25)];
    [self.rightBtn addTarget:self action:@selector(clickRightButton) forControlEvents:UIControlEventTouchUpInside];
    self.rightBtn.titleLabel.adjustsFontSizeToFitWidth = YES;
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:self.rightBtn];
    
    //    [self.leftBtn.titleLabel addObserver:self forKeyPath:@"text" options:NSKeyValueObservingOptionNew context:nil];
    [self.rightBtn addObserver:self forKeyPath:@"titleLabel.text" options:NSKeyValueObservingOptionNew context:nil];
    [self.leftBtn addObserver:self forKeyPath:@"titleLabel.text" options:NSKeyValueObservingOptionNew context:nil];
    

}


- (void)clickRightButton{
    NSLog(@"%@--右侧按钮点击了",self.navigationItem.title);
}
- (void)back{
    NSLog(@"%@--左侧按钮点击了",self.navigationItem.title);
    [self.navigationController popViewControllerAnimated:YES];
}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{
    
    UIButton * btn = (UIButton *)object;
    if (btn.imageView.image != nil) {
        return;
    }
    NSString * newBtnTitle = change[@"new"];
    CGSize titlSize = [newBtnTitle sizeWithFont:btn.titleLabel.font maxSize:CGSizeMake(MAXFLOAT, btn.frame.size.height)];
    btn.frame = CGRectMake(btn.frame.origin.x, btn.frame.origin.y, titlSize.width, titlSize.height);
    
}
- (void)dealloc{
    
    [self.leftBtn removeObserver:self forKeyPath:@"titleLabel.text"];
    [self.rightBtn removeObserver:self forKeyPath:@"titleLabel.text"];
    
}



- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
#warning Potentially incomplete method implementation.
    // Return the number of sections.
    return 0;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
#warning Incomplete method implementation.
    // Return the number of rows in the section.
    return 0;
}

/*
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:<#@"reuseIdentifier"#> forIndexPath:indexPath];
    
    // Configure the cell...
    
    return cell;
}
*/

/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}
*/

/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}
*/

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end
